Finding the Fourth Proportional to 9,649.59, 13,310.37 and 7,408.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,649.59 : 13,310.37 = 7,408.05 : x
2. Step 2: Convert to fraction form
   9,649.59/13,310.37 = 7,408.05/x
3. Step 3: Cross multiply
   9,649.59x = 13,310.37 × 7,408.05
4. Step 4: Simplify right side
   9,649.59x = 98,603,886.48
5. Step 5: Solve for x
   x = 98,603,886.48/9,649.59
6. Step 6: Final answer
   x = 10,218.45